Improvement in the manufacture of varnish



chunk une JAMES B. POLLOOK, OF PORT RICHMOND, NEWLYORK.

Letters Patent No. 109,245, dated Noyember 15, 1870.

IMPROVEMENT IN THE MANUFACTURE OF VARNISH.

The scheruleireferred to in these Letters Patent and making part of the s ame.

To all whom it may concern:

lBe it known that I, JAMES B. PoLLooK, of- Port Richmond, in the county of Richmond and State of New York,'have invented new and useful Improvements -in Apparatus for Making Varnish; and l do hereby declare that the following is a full, clear, aud exact description thereof, which will enable others skilled inthe-*art to make and use the same, refer ence being had to the accompanying drawings forining part ot' this specification.

My invention relates to an improved arrangement of steam-pipcs, in connection with superheaters, and kettles or paus for containing the oil to be` treated.

I will proceed to describe the apparatus.

Fig-ure 1 is a sectional elevation of one kettle, showing its construction. Y

Figure 2 is an elevation et" the kettles and theV steamgenerating apparatus, showing the whole operation.

Similar letters of reference indicate corresponding parts.

A is lthe outer shell of kettle.

B, the inner shell, leaving a space ot' one inch between the two shells.

C is a coil ot' copper pipe, laid in audaround the sides of the kettle, for the purpose of giving additional heating-surface.

I), metal covering to kettle, with Ventilating-pipe G leading into the furnace of boiler, for carrying off the noxious gases or fumes arising from the boiling oil, where they are consumed.

E E E are steam-pipes, leading from the superjheater to kettle.

F Fare-thc exhaust-pipes, leading back to the superheater, to superheat the steam that has passed through the kettle and coil ybefore introducing it' to the second kettle, as shown in fig. 2.

]I is an ordinary cylinder-boiler, set up in brickwork, with superheaters I and J set under` it, and di# rect-ly behind the bridge-wall.

K is a divison-wall, separating the boiler-room vfrom the kettle-room so as not to have any communication between them, making-it perfectly safe as to fire.

Kettles No. 1 and No. 2 vare cast-iron or' copper kettles, made double, with a space vof about one inch between the ytwo shells, with a copper coil of pipe running in and around the kettles, as shown in tig. 1*.

These kettles are set up in'brick-work, with an airspace, L, extending around the kettles, as shown in figs. 1 and 2.

When the kettles are filled with oil and the proper dricrs put in, the steam is let in from the boiler H into the steam-pipe a, and rnus thence, as the arrows indicate, to t-he superheater I from thence passes through thc pipe c to the kettle No. 1, where it enters at the points (l, c, and f. After passingthrough the coil and around the kettle t'makcs its exit at g and It; from thence it passes through the pipes c' back to the superheater J, where the steam is superheate-d again, and passes through the pipes Z to kettle No. 2, and enters at -points mi u o, and, passing through the coil and kettle as in No. 1, it makes its exit at p and q. It' more kettles are used it is passed to a superheater aga-iu, and thence to kettle No. 3. From the last kettle it is carried through pipe rto thechimney, for the purpose of creating draught in the furnace.

Kettles No. l and No. 2 are covered with a metal covering, D, and connected by pipe G.

Kettle No.1 has a pipe, G, leading from it to the furnace or chimney, for the purpose of carrying the' noxious fumes or gases from the room.

In this new and improved apparatus for making a siccative oil o1.' varuishfrom linseed-oil, alldanger of burning 'the oil, or of its frothing, boiling overand set ting it on lire, is entirely avoided, as the iow of steam can be so regulated that it is impossible to create heat sutcient to produce such results as the action of a direct re. A great economy of steam is thus eli'ected by working the steam over.

.Having thus described my invention,

I claim as new vand desire to secure by Letters described.

JAMES B. POLLOGK.

Witnesses WAsnruofroN HANEY, Huso4 H. Llnmnnoom 

